Manifold heater



L. E. ASKE MANIFOLD HEATER Fiied March 9. 1925 INVENTOR.

.0 712; ATNRNEYJ.

' a portion of STATES PATENT oFFic-s.

; UNITED LEONARD .E. ASKE,

Application filed March 9, 1925.

My invention relates ,t and has for its object the proved structure for trapping exhaust manifold and up take manifold of an inter drocarbon engine for the or DULUTH, MINNESOTA.

MANIFOLD HEATER.

0 manifold heaters provision of an im heat from the plying it to the innal explosion or hypurpose of heating and vaporizing the charge of fuel before said fuel is delivered to the piston cylinder.

lVith this and other objects in view, my in vention consists of the structures, combina-- tions and arrangements of parts hereinafter described and claimed.

In the drawings, Fig. myv said invention, omitt described engine block. larged vertical transvers 1, is a side View of ing the hereinafter Fig. 2, is an ene view A B of Fig. 1, a fragment of said engine block being included. of a partly said invention. of said Fig. 4;,

finished cover cover in completed form.

Fig. 3, is a front view forn'nng part of end view is a top Fig. 5, 1s

a side elevation of a filling pad or rear panel forming part of my said 6 is a top view of said co said engine invention, and Fig.

ver, filling pad and block; the hereinafter described manifolds being omitted to more clearly disclose the position of the cover and filler pad with respect to said engine block.

In the drawings, vided with exhaust ports bosses 1 1", which ports ister with and discharge opposite ports in depending lugs 2" and 1 is an engine block, proextending through are adapted to reginto correspondlng 2b forming part of an exhaust manifold 2. Positioned below said exhaust'manlfold is an intake manifold 3, upon upwardly directed central dome 3 to extend into the space 2 and 2*. A'copper ro which is formed an adapted between said lugs d 4 preferably extends into said dome through the top thereof.

Overlapping a portion of the outer side of said intake manifold intermediate of its ends and also overlapping a portion of the outer side of said exhaust manifold intermediate of its ends, is a close shield or cover 5 which is provided with wings wings are adapted to extend 5 and 5 which between the intake and exhaust manifolds to the side wall of said engine block, so as to closely said bosses 1" and 1 and The top and cut away or overlap said lugs 2" and 2".

bottom edges of said wings are formed so as to conform to the curvature of the lower side of said exhaust manifold and the upper manifold, respectively.

side of said intake Inserted into the construction being such on the line Serial No. 14,152.

stantially boxed in by said exhaust and intake manifolds and by said cover, wings and rear panel, thus forming aiheating chamber around said dome for. trapping the heatradiated in said chamber fold.

Alip 6, ispreferablyformed on the inner side of said intake manifold to supportsaid rear panel. said cover preferably has .a ventilating port formed therein adapted to be covered or uncovered by a damper 7 for regulating the temperature of said chamber. Said cover preferably has hoods 8 and 9 formed thereon for receiving underlying bosses formed on said exhaust manifold, so that said cover may lie closely against the sides of said manifolds respectively.

I am aware that it is not broadly new to provide means for the purpose of absorbing heat radiated from an exhaust manifold and transmitting it to an intake manifold, but I am not aware of any provision for preventing the escape of such heat through passages or spaces between the manifolds and the engine block, or over or under said lugs.

It is obvious that my invention may be modified in various particulars within the scope of certain of my claims.

What I claim, is:

1. In a manifold heater, the combination with an engine block, an exhaust manifold and an-intake manifold, said manifolds being spaced from said block for a portion of their lengths intermediate of their ends, of a cover adapted to overlap a portion of the outer side walls of said manifolds, said cover being provided with end wings adapted to extend between said manifolds to the opposing side wall of said block, the upper and lower edges of said wings being adapted to conform closely to the contour of the lower by said exhaustinanian exhaust manifold and an intake manifold, of a cover adapted to overlap aportion of the outer side walls of said manifolds, said exhaust manifold having two lugs formed thereon intermediate of its ends,

said lugs extending to said block, said manifolds being spaced from said block for that portion of their lengths extending between said lugs, said cover being provided with end wings adapted to extend between said manifolds to the wall of said block, said cover and wings being adapted to span said lugs, the upper and lower edges of said wings being adapted to conform respectively to the lower face of said exhaust manifold and to the upper face of said intake manifold, and a rear panel space filler for filling the space between said block and the side walls of said manifolds extending between said lugs.

3. In a manifold heater, the combination with an engine block of exhaust and intake manifolds, of a cover comprising a body portion adapted to overlap a portion of the outer side walls of both of said manifolds, and reduced wing portions extending at an angle from the opposite ends of said body portion, said end wings being adapted to extend between said said engine block.

4. In a manifold heater, the combination with an exhaust manifold and an intake manifold, of a cover adapted to overlap a portion of the outer side walls of both of said manifolds, said cover being'provided with wings adapted to extend at an angle between said manifolds, a back panel adapted to overlap a portion of the rearward side walls of both of said manifolds.

5. In a manifold heater, the combination with an exhaust manifold having depending lugs formed thereon containing ports, of an intake manifold having a vaporizing dome formed thereon extending between said lugs, a cover adapted to overlap a portion of the manifolds to the face of outer side walls of both of said manifolds,

said cover being provided with wings adapted to extend at an angle between said mani- I folds, and a back panel adapted to overlap a portion of the rearward side walls of both of said manifolds, said panel being positioned between said wings. 1 7

In testimony whereof, I hereunto aflix mysignature.

LEONARD E. ASKE. 

